A total of .01 is more than enough, maybe a blown .02 was already removed in the past
Carl
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----- Original Message -----
From: kr9u@... [ham_amplifiers]
To: ham_amplifiers@...
Sent: Wednesday, June 26, 2019 10:09 PM
Subject: [ham_amplifiers] Series DC Blocking cap.
Slightly off topic,
I am using an old Heathkit antenna switch that has the control voltages riding on the coax. The series DC blocking capacitor in the outside box has a piece chipped out of it. Maybe lighting, maybe power did it. It¡¯s an .02 uf 1.6 KV disk.
I bought a .02uf 3 KV disk Vishay and installed it. If I run a 1500 watt carrier through it for about 15 seconds, it gets warmer than lukewarm. Warmest on 10 meters as I would expect.
Would one expect the cap to be warm to hot after that amount of time? Any suggestions on what I should put in there? Curiously, the inside control box uses two of the .02 caps in parallel, not one as the outside box does.
Jim ¨C KR9U
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